PSI - Issue 44

Available online at www.sciencedirect.com Structural Integrity Procedia 00 (2022) 000–000 Available online at www.sciencedirect.com ScienceDirect

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Procedia Structural Integrity 44 (2023) 2302–2309

XIX ANIDIS Conference, Seismic Engineering in Italy BOND BEHAVIOUR OF EXTERNALLY BONDED BALSALT

FRCM SYSTEM AND CALCAREOUS STONE Giuseppe Bramato a *, Marianovella Leone a , Maria Antonietta Aiello a a University of Salento, Campus Ecotekne, 73100 Lecce, Italy

© 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the XIX ANIDIS Conference, Seismic Engineering in Italy. The paper aims to furnish a contribution to the understanding of the physical phenomena that characterize the mechanical behaviour of Basalt FRCM materials and their bond with masonry structures. Two different calcareous stone and two different mortars were considered as variables. First, the mechanical properties of constituent materials were estimated; then the bond behaviour were investigated through single-lap shear bond test. The test results were collected and processed in terms of bond strength and failure modes. © 2022 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license ( https://creativecommons.org/licenses/by-nc-nd/4.0 ) Peer-review under responsibility of the scientific committee of the XIX ANIDIS Conference, Seismic Engineering in Italy Keywords: FRCM, Bond, Basalt, Masonry, 1. Introduction FRCMs (Fabric Reinforced Cementitious Mortar) are a composite material mostly used in case of historical and monumental masonry buildings reinforcement due to their reversibility and compatibility with substrates. FRCM is an externally bonded systems, so the effectiveness of the strengthening is strongly influenced by the interaction between reinforcement-substrate and fibre-inorganic matrix. Several studies were conducted to identify which parameter influence this kind of interaction. Leone et al. (2020) conducted a study on FRCM systems constituted by Peer-review under responsibi Abstract The effectiveness of FRCM (Fibre Reinforced Cementitious Mortar) as strengthening system is influenced by the bond behaviour between reinforcement and substrate at different interfaces. Differently from what observed in case of organic binders, the interaction between inorganic matrix and fibres is mostly of mechanical type. Inorganic binders can hardly impregnate all fibre filaments, which leads often to adhesion problems at the interface matrix-fibre. The effectiveness of FRCM (Fibre Reinfor

* Corresponding author. Tel.: +39 0832 297266; fax: +39 0832 297248. E-mail address: giuseppe.bramato@unisalento.it

2452-3216 © 2022 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the XIX ANIDIS Conference, Seismic Engineering in Italy

2452-3216 © 2023 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the XIX ANIDIS Conference, Seismic Engineering in Italy. 10.1016/j.prostr.2023.01.294